Which of the following network access standard disassembler is used for connection station to a packet switched network ?
A. | X.3 |
B. | X.21 |
C. | X.25 |
D. | X.75 |
Option: C Explanation : For windows above 9 frames, the full 64 kbps is used. Click on Discuss to view users comments. |
IP address can be used to specify a broadcast and map to hardware broadcast if available. By conversion broadcast address has hosted with all bits
A. | 0 |
B. | 1 |
C. | both (a) and (b) |
D. | none of these |
Option: B Explanation : Click on Discuss to view users comments. |
ARP (address resolution protocol) is
A. | A TCP/IP protocol used to dynamically bind a high level IP address to a low level physical hardware address |
B. | ATCP/IP high level protocols for transferring files from one machine to another |
C. | a protcol used to monitor computers |
D. | a protocol that handles error and control messages |
Option: A Explanation : Click on Discuss to view users comments. |
Which of the following TCP/IP protocol is used for file transfer with minimal capability and minimal overhead ?
A. | RARP |
B. | FTP |
C. | TFTP |
D. | TELNET |
Option: B Explanation : Click on Discuss to view users comments. |
How many class A, B and C networks Ids can exist?
A. | 2,113,658 |
B. | 16,382 |
C. | 126 |
D. | 128 |
Option: A Explanation : Click on Discuss to view users comments. chandan kumar said: (7:33am on Saturday 6th July 2013)
IN CLASS 1 BLOCK 0.0.0.0 TO 0.255.255.2552 BLOCK 1.0.0.0 TO 1.255.255.255LAS BLOCK 127.0.0.0 TO 127.255.255.255NOW SEE IN BINARY REPRESENTATION128 64 32 16 8 4 2 1IN 1 BLOCK 1ST BYTE 0 FOR SELECT MAXMIM 127 WE NEED 7 BITHENCE IN CLASS A NO OF BLOCK=2POWER(7)=128IN CLASS B 1 BYTE 011 BLOCK 128.0.0.0 TO 128.0.255.255LAST BLOCK 191.255.0.0 TO 191 .255.255.255HENCE NO OF BLOCK IN CLASS B 2 POWER(6 8)=16384 IN CLASS C 1ST BLOCK 192.0.0.0 TO 192.0.0.2552ND BLOCK 192.1.0.0 TO 192.1.0.255LAST BLOCK 223 .255.255.0 TO 223IN BINARY REPRESENTATION 001NO OF BLOCK IN CLASS C=2 POWER(5 16)=2097152HENCE TOTAL NUMBER OF BLOCK IN CLASS A,B,C128 16384 2097152=2113664
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